Ключевые слова: africa, african, aggressive, amphibius, animal, aquatic, background, big, botswana, danger, dangerous, delta, eating, eye, fat, fauna, flora, food, habitat, head, hippo, hippopotamus, huge, hungry, kenya, lake, laughing, life, mammal, mouth, national, natural, nature, okavango, park, planet, pond, reserve, river, safari, savanna, savannah, sunset, teeth, water, wild, wilderness, wildlife, zoo,